CVE-2019-0074 — A path traversal vulnerability in NFX150 Series and QFX10K Series, EX9200 Series

A path traversal vulnerability in NFX150 Series and QFX10K Series, EX9200 Series, MX Series and PTX Series devices with Next-Generation Routing Engine (NG-RE) allows a local authenticated user to read sensitive system files. This issue only affects NFX150 Series and QFX10K Series

01What is this vulnerability?

A path traversal vulnerability in NFX150 Series and QFX10K Series, EX9200 Series, MX Series and PTX Series devices with Next-Generation Routing Engine (NG-RE) allows a local authenticated user to read sensitive system files. This issue only affects NFX150 Series and QFX10K Series, EX9200 Series, MX Series and PTX Series with Next-Generation Routing Engine (NG-RE) which uses vmhost. This issue…

02Affected products

Vendor	Product	Versions
Juniper Networks	Junos OS	15.1, 16.2 16.2, 15.1F, 16.1R6, 17.1, 17.2R1-S3, 17.2R3, 17.3R1-S1, 17.3R2, 17.4R1, 18.1, 18.2, 18.2X75, 18.3, 18.4

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-10-09T19:26:18.153Z
• Last modified: 2024-09-17T03:38:51.289Z

09References

• kb.juniper.net — https://kb.juniper.net/JSA10975